Card Rarity

Card Rarity is the way cards are ranked in Hearthstone. The higher the rarity, the stronger the card typically is. Cards that are rarer also break down into more dust in Crafting.

There are two ways of telling how rare a card is. The easiest way is to look at the middle of the card and see what color gem it has. You can also tell by looking at how detailed the frame of the card is.